单项选择题

The party was hosted by the minister himself in grandeur, we______so casually.

A. needn't dress up
B. mustn't dress up
C. needn't have dressed up
D. shouldn't have dressed up
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单项选择题
In order to live in a harmonious community, all the residents should______to the rules and regulations.
A. conform
B. confront
C. confirm
D. conduct
单项选择题
Comparing the original and the revised version of the novel, I prefer the______one.
A. latter
B. last
C. late
D. later
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